Here is what i got on my Lenovo Edge e420.
Mountain Lion with 10.8.5 update, Chameleon bootloader and MacBook Pro 8.1 smbios.
Internal screen goes black after the apple logo and external HDMI monitor also does not work.
Got into the system by deleting AppleIntel kexts and enabled screen sharing then put drivers back.
In VNC I see it is working flawlessly with QE/CI and variety of resolutions detected including my native 1366x768.
I've tried Clover also with EDID injection (from Windows) - did not help.
Also tried hdgraphics_patcher (http://www.insanelym...-fixed-sl-1068/) - used kext from 10.8.4 also did not help still black screen after apple logo.
One thing also - when booting with external monitor connected or when detaching it the internal screen gets blue sometimes for a few seconds like it is "secondary" (I'm not sure though 'couse I can't connect through VNC with external monitor connected).
_e420_1.png 83.39KB 16 downloads
Guys please help me to move to right direction I got stuck and I really need hackintosh on this laptop.